题目内容

检疫防治的主要措施有对外检疫、()。

A. 国际检疫
B. 国内检疫
C. 口岸检疫
D. 灭害处理

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齿轮传动的主要优点是能保证准确的(),结构紧凑,承载能力大,寿命长,效率高,能够组成()和()。

When start a screw pump, the by pass valve should be ().

A. closed
B. opened fully
C. cracked open
D. partly ope

智能网的实现方法是将电信网的交换中心改造为SSP(业务交换点),使其能识别智能呼叫事件并触发智能业务,同时能处理智能网SCP下发的控制命令,实现智能呼叫的接续。

A. 正确
B. 错误

You work as a database administrator for Supportcenter.cn. When you tried to connect to the database, you received the following error: ERROR: ORA-12541:TNS:no_listener You found that the listener is not running on the server, so you issued the following command in the Listener Control utility to start the listener. lsnrctl>START What statement is true?()

A. It would attempt to start the default listener
B. It would start the most recently created listener.
C. It would display an error with a message asking for the listener name to be specified.
D. It would show you a list of listeners and prompts for the listener name that you want to start.

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